Hello msmani
Try the following troubleshooting steps to help resolve the issue:
1. Double check the cable connection. Make sure the speaker is securely plugged in.
2. Try testing the speaker system on a different audio source. (other computers, Ipod, MP3 player, etc.)
If you suspect of a hardware failure, please contact the Logitech Support Team of your region (refer here) for warranty claims.
dalong
Support Specialist
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